Vintage Milk Glass Reliquary Rosary

For sale is this 21" long, white milk glass rosary with a compartment on back that was used to hold a relic of the catacombs. The crucifix measures 2" long and has symbols on back that I've never seen before and can't identify. The glass beads measure 5/16" long and the findings are brass, nickel plated copper and white metal. The rosary weighs 23.2 grams, has all fifty-nine original beads still intact and in good condition and no damage. I don't believe the soil from the catacombs is still intact.